Diesel UPS System

The diesel UPS system is based on the following main components: 

The flywheel stores kinetic energy in rotating masses. In normal operation, the flywheel spins at a constant speed; the load is provided by the mains supply. If this current flow is interrupted, the system converts the energy stored in the flywheel into electrical energy, thereby supplying the consumer load without interruption. 
The diesel generating set consists of a highly available, state-of-the-art combustion motor and a generator. The design depends on the individual size of the UPS and the additional “short-break” loads, i.e. loads that supply emergency power but not the UPS. 
The control system of the diesel UPS system fulfils the strict requirements for the specific measuring, control, regulation and guidance technology, integrating the diesel generating set and the flywheel in a “state of the art” long-term uninterruptible power supply. Once voltage is again being provided by the mains supply, the system switches both the load and the flywheel back to the mains supply for recharging. The flywheel reaches its full charging capacity at 7700 rpm, while the UPS is ready for operation at 4000 rpm. Depending on the depth of discharge, the charging time takes between a few seconds and two minutes, remaining under five minutes even when the system is being started up.
The GenStart® is part of each diesel UPS system and, redundant to the starter batteries, independently supplies the diesel start process via the internal UPS voltage. Thus, regardless of the make, starting the diesel generating sets is reliable thanks to the highly available diesel UPS system (start redundancy).

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